[Python-modules-team] Bug#558608: libapache2-mod-wsgi: Apache crashes

Jakub Wilk ubanus at users.sf.net
Sun Nov 29 15:54:00 UTC 2009

Package: libapache2-mod-wsgi
Version: 2.5-1~lenny1
Severity: important

After installing libapache2-mod-wsgi and restaring Apache, the server 
immediately crashes. I could reproduce that bug on 2 different machines 
running lenny (although it is not 100% deterministic).

gdb backtrace:

#0  0x00007f884cb2eb97 in sem_wait () from /lib/libpthread.so.0
#1  0x00007f8845973bc8 in PyThread_acquire_lock (lock=0x0, waitflag=1) at ../Python/thread_pthread.h:349
#2  0x00007f8845c0e684 in ?? () from /usr/lib/apache2/modules/mod_wsgi.so
#3  0x00007f8845c176b9 in ?? () from /usr/lib/apache2/modules/mod_wsgi.so
#4  0x0000000000438e1d in ap_run_child_init (pchild=0x2360888, s=0x21d8968) at /build/buildd/apache2-2.2.9/server/config.c:156
#5  0x000000000044da29 in child_main (child_num_arg=<value optimized out>) at /build/buildd/apache2-2.2.9/server/mpm/prefork/prefork.c:518
#6  0x000000000044dfd4 in make_child (s=0x21d8968, slot=0) at /build/buildd/apache2-2.2.9/server/mpm/prefork/prefork.c:777
#7  0x000000000044ec16 in ap_mpm_run (_pconf=<value optimized out>, plog=<value optimized out>, s=<value optimized out>)
     at /build/buildd/apache2-2.2.9/server/mpm/prefork/prefork.c:912
#8  0x0000000000425be5 in main (argc=3, argv=0x7fff6eef4c38) at /build/buildd/apache2-2.2.9/server/main.c:732

-- System Information:
Debian Release: 5.0.3
   APT prefers stable
   APT policy: (900, 'stable'), (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.26-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=C, LC_CTYPE=pl_PL.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages libapache2-mod-wsgi depends on:
ii  apache2                  2.2.9-10+lenny6 Apache HTTP Server metapackage
ii  apache2-mpm-prefork [apa 2.2.9-10+lenny6 Apache HTTP Server - traditional n
ii  apache2.2-common         2.2.9-10+lenny6 Apache HTTP Server common files
ii  libc6                    2.7-18          GNU C Library: Shared libraries
ii  python                   2.5.2-3         An interactive high-level object-o

libapache2-mod-wsgi recommends no packages.

Versions of packages libapache2-mod-wsgi suggests:
pn  apache2-mpm-worker | apache2- <none>     (no description available)

-- no debconf information

Jakub Wilk
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